Parametric Study of Stimulus-Response Behavior for Car-Following Models
This study developed a family of car-following models that emulate driving behavior on congested freeway traffic conditions. The study develops separate sub-models for acceleration and deceleration responses. The study calibrates these models using individual vehicle trajectory data of 75 “automobile following automobile” collected on a segment of Interstate 101 in Los Angeles, California. The study uses nonlinear regression with robust standard errors to estimate the model parameters and obtain their distributions across drivers. The stimulus response thresholds that delimit the acceleration and deceleration responses were determined based on signal detection theory. The results indicate that the average drivers’ response time lag was lower for deceleration response than for acceleration response. This result is expected, since deceleration response is related to safety, therefore, drivers respond faster than for acceleration response. The acceleration response relate to drivers’ desire to attain maximum speed, which is a less critical need than deceleration response. Due to similar reasons, the results also show that the average stimulus response threshold was lower for deceleration response than acceleration response. Furthermore, the deceleration response have higher magnitudes of parameters than acceleration response, which further indicates that, on average, drivers are more aggressive when required to decelerate than when they want to accelerate. This study will be extended to develop additional sub-models for other car-following situations, such as “large truck following automobile” and “automobile following large truck”. A steady-state model will also be developed for situations when the stimulus is within the minimum detectable driver response thresholds.
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Corporate Authors:
500 Fifth Street, NW
Washington, DC United States 20001 -
Authors:
- Siuhi, Saidi
- Kaseko, Mohamed S
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Conference:
- Transportation Research Board 89th Annual Meeting
- Location: Washington DC, United States
- Date: 2010-1-10 to 2010-1-14
- Date: 2010
Language
- English
Media Info
- Media Type: DVD
- Features: Figures; References; Tables;
- Pagination: 19p
- Monograph Title: TRB 89th Annual Meeting Compendium of Papers DVD
Subject/Index Terms
- TRT Terms: Car following; Deceleration; Highway operations; Traffic congestion; Traffic data; Traffic models; Vehicle trajectories
- Uncontrolled Terms: Stimulus response analysis
- Subject Areas: Highways; Operations and Traffic Management; Planning and Forecasting; I72: Traffic and Transport Planning;
Filing Info
- Accession Number: 01154510
- Record Type: Publication
- Report/Paper Numbers: 10-1779
- Files: TRIS, TRB
- Created Date: Apr 14 2010 7:14AM